Everything goes bad. When milk goes bad it’s easy to see, smell, taste. Just like milk, it’s not like every mask and gown suddenly goes bad on the date printed on the box. Unlike milk, there’s no easy way a consumer can check if their mask or gown is still good or not. It’s best just to throw it away and get a new one. Usually you’re just throwing out one box and not 10 million of them but 2020 was wild.